import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/users/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roules from '../components/power/Roule.vue'
import Cates from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'

Vue.use(VueRouter)

const routes = [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
        path: '/home',
        component: Home,
        redirect: '/welcome', // 当页面访问到home路由，重定向到 welcome页面
        // home页面嵌套一个子路由    
        children: [
            { path: '/welcome', component: Welcome },
            { path: '/users', component: Users },
            { path: '/rights', component: Rights },
            { path: '/roles', component: Roules },
            { path: '/categories', component: Cates },
            { path: '/params', component: Params },
            { path: '/goods', component: List },
            { path: '/goods/add', component: Add },
            { path: '/orders', component: Order },
            { path: '/reports', component: Report },
        ]
    }
]

const router = new VueRouter({
    routes
})

// 挂载路由导航守卫
router.beforeEach((to, form, next) => {
    // to 将要访问的路径
    // from 代表从哪个路径跳转而来
    // next 是一个函数 表示放行
    // next() 放行  next('/login') 强制跳转
    if (to.path === '/login') return next();
    // 获取tocken
    const tockenStr = window.sessionStorage.getItem('tocken');
    if (!tockenStr) return next('/login');
    next();
})

export default router